Hay-carrier elevating pulley and yoke



(No Model.)

J. E. PORTER.

HAY CARRIER ELEVATING PULLEY AND YOKE.

No. 535,725. Patented Mar. 12, 1895.

INVENTOR WITN ESSES UNITED STATES PATENT OFFICE.

JOSEPH E. PORTER, OF OTTAWA, ILLINOIS.

HAY-CARRIER ELEVATING PULLEY AND YOKE.

SPECIFICATION forming part of Letters Patent No. 535,725, dated March12, 1 8195.

Application filed December 13, 1894-.- Serial No. 531,721. (No model.)

To all whom it may concern.-

Beitknown that I, JOSEPH E.PoRTER,aeitizen of the United States,residing at Ottawa, in the county of La Salle and State of Illinois,have invented certain new and useful 1m.- provements in Hay-CarrierElevating Pulleys and Yokes; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to improvements in hay carrier elevating pulleysand yokes, and it consists of a sling supporting trip pulley, providedwith alocking and supporting head, and a supporting clevis or yokeadapted to engage the operating rope above said pulley in such manner asto allow the head of the latter to pass through it and engage thecarrier; said yoke resting on said pulley when the load is raised.

It also consists of the combination with a sling supporting trip pulleyprovided at its top with an apertured lug, of a locking head providedwith a bifu rcated end adapted to fitover and be securedto said lug,whereby different shaped heads may be attached to said pulley, at will.

It also consists of certain other novel constructions, combinations andarrangements of parts, all of which will be hereinafter moreparticularly set forth and claimed.

In the accompanying drawings forming part of this specification,Figure 1. represents a perspective view of the devices embodying myinvention attached to a hay carrier. Fig. 2. represents a side elevationof the trip pulley and yoke. Fig. 3. represents a central verticalsection of the devices shown in Fig. 2. Fig. 4. represents a sideelevation of the trip pulley without its supporting and locking head,and Fig. 5. represents perspective views of the different forms ofsupporting and'locking heads adapted to be attached to the trip pulley.p

A in the drawings represents a hay carrier provided with any suitabletrip pulley en gaging mechanism.

B is a trip pulley for supporting one end of a hay sling. To the top ofthis pulley a lockin g head 0 is applied so as to be a fixture with thepulley. As one manner of securing this locking head to the pulley, a lugI) having passages through it, is provided at the top of the pulley, andon the locking head prongs c are provided, at its lower end. Theseprongs also have passages through them which coincide with the passagein the lug when the prongs are made to straddle or fitted over the saidlug. A bolt 0' is passed through said prongs, and thelug, for thepurpose of fastening the locking head to the pulley frame or housing.This mode of connecting the head to the pulley frame or housing is newas a specific construction, and is very useful as will hereinafterappear, but while this is so I do not limit my invention to this onemode of connecting the locking head to the pulley frame or housing, asthe locking head may be secured to the pulley frame or housing, eitherby screwing its lower end into the frame or housing of the pulley-wheel,or by making the locking head integral with said housing, but neither ofthese constructions afford the advantages that are secured by thespecial construction shown. Asling supporting hook I) which has abifurcated end 19 is pivoted on a lug If: on the lower part of thepulley frame or housing, by means of a bolt 17 which passes through saidbifurcated end, and said lug. The pulley is also provided with guidinglugs 13 and loops 5 the latter connecting the halves of the pulley frameor housing, and preventing the supporting rope D from jumping oi thepulley wheel B, and the former guiding said rope, so that it will alwayspass evenly onto said pulley-wheel even though it be in an inclinedposition.

The pulley with its locking and supporting head and sling hook, formsone member of my sling support, the other being formed by a yoke E. Thisyoke is provided at its upper end with pulley wheels 6 whicharejournaled in and surrounded by casings e, so that the rope D passingover said pulleys is guided and retained on them by said casings. Saidyoke is also provided at its lower end with a lug c upon which ispivoted by a bolt e the bifurcated end a of a sling supporting hook e.The yoke E near its upper end is bent at an angle, see Fig. 2, so thatwhen the sling is in position, the load raised, and the locking head inengagement with the carrier, the said yoke will rest evenly upon the topof the pulley,

and be thereby supported; the head and a portion of the pulley passingthrough said yoke in a vertical line.

Any suitable form of sling Fcan be attached to the hooks Z) and 6 andthe same thereby operated.

The rope D has one end made fast to the carrier, and is passed down overone pulley 6, about the pulley-wheel B, and up over the other pulleywheel 6, and then over the pulley on the opposite side of the carrier.It will thus be seen that when the load is to be attached to the sling,the pulley B and the yoke E can be separated as much as desired, andthe'sling applied. When the rope D is tightened the yoke and the pulleyare gradually drawn together until the yoke rests upon the pulley, whenthe load is firmly caught, and can be raised, locked to the carrier andconveyed to the desired point.

By means of my peculiar form of pulley with its lug b and head 0 havingbifurcated end, I am enabled to apply my device to any form of carrier,as the different represented styles of heads can be applied to thepulley. See Fig. 5. It will also be noted that by having the hooks e andb pivoted, that the strain on the yoke E and the pulley B will be moredirectly downward, and thus said hoops will not be unduly spread apartby the size of the load being carried.

What I claim as my invention is- 1. A hay carrier elevating pulley andyoke, comprising a pulley provided with an engaging and supporting head,and a yoke through which the head is adapted to pass to engage acarrier, and which yoke when the head is engaged with the carrier, restsupon the top of the pulley, substantially as described.

2. A hay carrier elevating pulley and yoke, comprising, a pulleyprovided with a detachable locking and supporting head, and a yokethrough which the head is adapted to pass to engage the carrier andwhich yoke when the head is engaged with the carrier issupported by thepulley from below, substantially as described.

3. A hay carrier elevating pulley and yoke,

comprising, a pulley provided with a detachable locking and supportinghead; said head having, its lower end bifurcated, a bolt for attachingthe head to the pulley, and a yoke through which the head is adapted topass to engage a carrier and which yoke when the head is engaged withthe carrier is supported by the pulley from below, substantially asdescribed.

4. The combination of a trip pulley having a supporting and locking headand a pivoted sling supporting hook, a olevis or yoke provided with apivoted sling supporting hook and adapted to engage supporting ropesabove the pulley, but allow the head of the pulley to pass therethroughto engage the carrier; said yoke being supported by said pulley frombelow when the locking head engages the carrier, substantially asdescribed.

5. The combination of a sling supporting trip pulley provided with alocking and supporting head, a slingsupporting clevis or yoke havingwheels adapted to engage the supporting ropes above the pulley but allowthe head of the same to pass therethrough to engage the carrier; saidyoke when the head is engaged with the carrier being supported by thepulley from below, substantially as described.

6. In combination with a hay carrier, a sling supporting trip pulleyprovided with a locking and supporting head, and a yoke adapted toengage the operating ropes above said pulley; the upper part of saidyoke being bent inward, whereby the pulley carrying the locking head isallowed to stand in a line vertical with the passage of the carrier intowhich the locking head enters, and. thus while the said locking head canpass through the yoke, the pulleymay remain belowthe inwardly bentportion of the yoke, substantially as described.

In testimony whereof I hereunto afilx my signature in presence of twowitnesses.

JOSEPH E. PORTER.

\Nitnesses:

J. 0. HARRIS, W. I. HARRIS.

